in his inaugural, while talking about the struggle for civil rights. >> for if we are truly created equal, then surely the love we commit to one another must be equal as well. >> reporter: the president insisting we address climate change, and on immigration, arguing we should welcome striving immigrants. >> until bright young students and engineers are enlisted in our work force, rather than expelled from our country. >> reporter: were there powerful performances, kelly clarkson's stirring rendition of "my country tis of thee." ♪ to thee we sing >> reporter: beyonce returning four years later, this time, to sing the national anthem. ♪ and the rockets red glare ♪ the bombs bursting in air ♪ gave proof through the night ♪ that our flag was still there ♪ >> reporter: and as the president made his exit up those steps, a pause. turning around to take in his final inaugural moment. one more time. a microphone picking up what he said. >> i want to take a look one more time. i'm not going to see this again. >> reporter: and as the first couple made their way back to the white house,